Hi Starfish. There is a Pearl Izumi store at the Woodburn outlet stores on I5. There is only one exit for Woodburn and you'll pass the stores on the freeway.
They have a women's section. It's not huge but adequate and the sales people are very nice and helpful. I went there recently and bought several items. It was great to actually try clothing on before you purchase. In the past, I had only purchased online and took my chances.